In most cases, what happens to a liquid when it cools?

A) Its density increases

B) Its density decreases

C) Its mass increases

D) Its mass decreases

E) Its volume increases

F) Its volume decreases

The efficiency of a ramp is 75%. if the amount of work input is 240 j, what is the amount of useful work output?

How many electrons must be transferred to a body to produce a charge of 125 nc?

A baseball is popped straight up into the air and has a hang-time of 6.25 S. Determine the height to which the ball rises before it reaches its peak. (Hint: the time to rise to the peak is one-half the total hang-time.)

How is coal used to generate electricity?

How would you describe the instantaneous rate of change of an automobile's position of the highway?

Consider a brick that is totally immersed in water, with the long edge of the brick vertical. the pressure on the brick is

Which of the following are examples of projectile motion? Check all that apply. A. An object pushed up a hill B. An object that is launched horizontally off a cliff C. An object thrown upward at an angle D.

When generators are spun by turbines, they a. Produce nuclear energy. B. Store potential energy. C. Produce electricity. D. Burn fossil fuels.

How could gravitational potential energy be useful

A negatively charged rod is brought near a neutral metal sphere. Which of the following is true? A negatively charged rod is brought near a neutral metal sphere. Which of the following is true? There is no electric force between the rod and sphere.